//this is equivalent to a name space //it is used to group related classes package com.spconger.www; //import java objects from the library import java.util.ArrayList; import java.util.Scanner; public class FirstClass { /** * @param args */ //all programs start with main public static void main(String[] args) { FirstClass fc = new FirstClass(); //fc.method1(); //fc.ifExample(); fc.simpleForLoop(); fc.simpleWhileLoop(); } private void method1(){ //prints a line out to the console System.out.println("This is a java program"); } private void ifExample(){ //the scanner is an object that reads input //from the console Scanner scan = new Scanner(System.in); System.out.println("Enter a number"); int number = scan.nextInt(); //if example if(number > 10){ System.out.println("Take over the world"); } else if(number > 5){ System.out.println("oh well"); } else { System.out.println("Stay in and have a beer"); } } private void simpleForLoop(){ for (int i=0;i<=10;i++){ System.out.println(i); } } private void simpleWhileLoop(){ int num = 0; while (num < 10){ System.out.println(num); num ++; } } private void simpleDoLoop(){ int num=10; do{ System.out.println(num); num ++; }while(num<10); } private void simpleArray(){ int myArray[] = new int[4] ; ArrayListmylist = new ArrayList (); //java uses a wrapper class to provide conversions //between primative types like int. Integer has methods // to parse an integer from a string //or to convert an integer into a string String myNumberString = "1234"; int myInteger=Integer.parseInt(myNumberString); String intString=Integer.toString(myInteger); } }
Monday, June 25, 2012
First Java Class
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Is this an example of A1?
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